64242105449 has 2 divisors, whose sum is σ = 64242105450. Its totient is φ = 64242105448.

The previous prime is 64242105427. The next prime is 64242105467. The reversal of 64242105449 is 94450124246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37179552400 + 27062553049 = 192820^2 + 164507^2 .

It is a cyclic number.

It is not a de Polignac number, because 64242105449 - 2¹² = 64242101353 is a prime.

It is a super-2 number, since 2×64242105449² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64242105419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32121052724 + 32121052725.

It is an arithmetic number, because the mean of its divisors is an integer number (32121052725).

Almost surely, 2^64242105449 is an apocalyptic number.

It is an amenable number.

64242105449 is a deficient number, since it is larger than the sum of its proper divisors (1).

64242105449 is an equidigital number, since it uses as much as digits as its factorization.

64242105449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 64242105449 in words is "sixty-four billion, two hundred forty-two million, one hundred five thousand, four hundred forty-nine".